The Sig Sauer ROMEO4 1x20 Red Dot Sights are made with a very versatile reticle. The reticle can be used at CQB distances very well using the outer 65 MOA portion of the reticle. The 2 MOA center dot is great for more refined shots when needed. This optic has a very impressive battery life, lasting around 50,000 hours. Common CR2032 batteries will keep your optic running. If you need to you can use this optic in accordance with night vision due to its 2 night vision settings. The aluminium body and rugged optic construction make this optic a great choice for any rifle.